The floor's heat sensor was not installed, and the heating system was set up with the wrong voltage.

An electrical company has been given the largest fine in the Ontario industry's history after their faulty work led to the death of an elderly man.

Pro-Teck Electric had installed a heated bathroom floor in a Niagara-on-the-Lake home. An elderly man fell on that floor on April 5, 2014, according to a release from Ontario's Electrical Safety Authority (ESA). He suffered second and third-degree burns to his body, and died from his injuries weeks later.

According to an ESA investigation, the floor's heat sensor was not installed, and the heating system was set up with the wrong voltage, which led to the overheating.

Pro-Teck pled guilty to multiple charges in 2015, including leaving an unsafe electrical condition and failure to procure connection authorization before use, according to the St. Catharines Standard.